A4 Heathrow Airport to Cippenham via Langley, Slough
Operated by First Berkshire & The Thames Valley. Runs 24 hours. 136 journeys on weekdays. Fares: adult single £2.50 to £3.00 — more.
Night bus — runs 24 hours. Every night. Nights are the night you set out on, so a 01:30 bus on Saturday morning counts as Friday. All night buses.
Wanted a different A4? 4 other bus routes are numbered A4 elsewhere in the UK — see every A4 bus timetable by area.
| Stop | 03:05 | 03:35 | 04:05 | 04:35 | 05:05 | 05:35 | 06:05 | 06:35 | 07:05 | 07:35 | 08:05 | 08:25 | 08:55 | 09:25 | 09:55 | 10:25 | 10:55 | 11:25 | 11:55 | 12:25 | 12:55 | 13:25 | 13:55 | 14:25 | 14:55 | 15:25 | 15:55 | 16:25 | 16:55 | 17:25 | 17:55 | 18:25 | 19:00 | 19:25 | 20:00 | 20:35 | 21:05 | 21:35 | 22:05 | 22:35 | 23:05 | 23:35 | 00:05 | 00:35 | 01:05 | 02:05 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Heathrow Central Bus Station (Stop 20) | 03:05 | 03:35 | 04:05 | 04:35 | 05:05 | 05:35 | 06:05 | 06:35 | 07:05 | 07:35 | 08:05 | 08:25 | 08:55 | 09:25 | 09:55 | 10:25 | 10:55 | 11:25 | 11:55 | 12:25 | 12:55 | 13:25 | 13:55 | 14:25 | 14:55 | 15:25 | 15:55 | 16:25 | 16:55 | 17:25 | 17:55 | 18:25 | 19:00 | 19:25 | 20:00 | 20:35 | 21:05 | 21:35 | 22:05 | 22:35 | 23:05 | 23:35 | 00:05 | 00:35 | 01:05 | 02:05 |
| Compass Centre (Stop BW) | 03:09 | 03:39 | 04:09 | 04:39 | 05:09 | 05:39 | 06:09 | 06:39 | 07:09 | 07:39 | 08:09 | 08:30 | 09:00 | 09:30 | 10:00 | 10:30 | 11:00 | 11:30 | 12:00 | 12:29 | 13:00 | 13:30 | 14:00 | 14:30 | 15:00 | 15:30 | 16:00 | 16:29 | 16:59 | 17:29 | 17:59 | 18:29 | 19:04 | 19:30 | 20:05 | 20:40 | 21:09 | 21:39 | 22:09 | 22:39 | 23:09 | 23:39 | 00:09 | 00:39 | 01:09 | 02:09 |
| Lakeside Road (opp) | 03:13 | 03:43 | 04:13 | 04:43 | 05:13 | 05:44 | 06:14 | 06:44 | 07:13 | 07:44 | 08:14 | 08:34 | 09:04 | 09:34 | 10:04 | 10:34 | 11:04 | 11:34 | 12:04 | 12:34 | 13:04 | 13:34 | 14:04 | 14:35 | 15:05 | 15:34 | 16:04 | 16:34 | 17:04 | 17:34 | 18:04 | 18:34 | 19:09 | 19:34 | 20:10 | 20:44 | 21:14 | 21:44 | 22:14 | 22:44 | 23:14 | 23:44 | 00:14 | 00:44 | 01:14 | 02:14 |
| The Toby (opp) | 03:17 | 03:47 | 04:17 | 04:47 | 05:17 | 05:48 | 06:18 | 06:48 | 07:18 | 07:48 | 08:19 | 08:39 | 09:09 | 09:39 | 10:09 | 10:39 | 11:09 | 11:39 | 12:09 | 12:39 | 13:09 | 13:39 | 14:10 | 14:40 | 15:10 | 15:40 | 16:10 | 16:39 | 17:09 | 17:39 | 18:09 | 18:40 | 19:15 | 19:39 | 20:15 | 20:49 | 21:19 | 21:49 | 22:19 | 22:49 | 23:19 | 23:49 | 00:19 | 00:49 | 01:19 | 02:19 |
| Wellington Street Stop H | 03:24 | 03:53 | 04:23 | 04:54 | 05:24 | 05:55 | 06:25 | 06:55 | 07:25 | 07:56 | 08:26 | 08:47 | 09:18 | 09:48 | 10:18 | 10:48 | 11:19 | 11:49 | 12:20 | 12:50 | 13:20 | 13:51 | 14:21 | 14:51 | 15:20 | 15:50 | 16:19 | 16:48 | 17:18 | 17:48 | 18:18 | 18:48 | 19:23 | 19:48 | 20:23 | 20:57 | 21:27 | 21:57 | 22:27 | 22:57 | 23:27 | 23:57 | 00:27 | 00:57 | 01:27 | 02:27 |
| Salt Hill Three Tuns (W-bound) | 03:29 | 03:58 | 04:28 | 04:59 | 05:29 | 06:01 | 06:31 | 07:01 | 07:32 | 08:03 | 08:34 | 08:54 | 09:26 | 09:56 | 10:26 | 10:56 | 11:27 | 12:01 | 12:31 | 13:01 | 13:31 | 14:01 | 14:31 | 15:02 | 15:32 | 16:02 | 16:32 | 17:02 | 17:30 | 17:59 | 18:29 | 18:57 | 19:33 | 19:58 | 20:33 | 21:07 | 21:35 | 22:05 | 22:35 | 23:05 | 23:35 | 00:05 | 00:35 | 01:05 | 01:35 | 02:35 |
| Dover Road Stop B (W-bound) | 03:33 | 04:03 | 04:33 | 05:04 | 05:34 | 06:06 | 06:36 | 07:07 | 07:37 | 08:07 | 08:39 | 09:00 | 09:31 | 10:02 | 10:32 | 11:02 | 11:33 | 12:07 | 12:37 | 13:07 | 13:38 | 14:07 | 14:38 | 15:09 | 15:39 | 16:08 | 16:38 | 17:08 | 17:35 | 18:05 | 18:34 | 19:02 | 19:38 | 20:03 | 20:38 | 21:11 | 21:39 | 22:09 | 22:39 | 23:09 | 23:39 | 00:09 | 00:39 | 01:09 | 01:39 | 02:39 |
| St Andrews Way (o/s 7) | 03:36 | 04:06 | 04:36 | 05:07 | 05:37 | 06:09 | 06:40 | 07:10 | 07:40 | 08:11 | 08:42 | 09:03 | 09:34 | 10:05 | 10:36 | 11:06 | 11:37 | 12:10 | 12:40 | 13:11 | 13:42 | 14:12 | 14:42 | 15:13 | 15:43 | 16:12 | 16:42 | 17:12 | 17:39 | 18:09 | 18:38 | 19:06 | 19:42 | 20:07 | 20:42 | 21:14 | 21:42 | 22:12 | 22:42 | 23:12 | 23:42 | 00:12 | 00:42 | 01:12 | 01:42 | 02:42 |
| Moreton Way (S-bound) | 03:39 | 04:08 | 04:38 | 05:09 | 05:40 | 06:11 | 06:42 | 07:12 | 07:43 | 08:13 | 08:46 | 09:07 | 09:38 | 10:09 | 10:39 | 11:10 | 11:40 | 12:15 | 12:44 | 13:15 | 13:46 | 14:15 | 14:46 | 15:17 | 15:46 | 16:16 | 16:46 | 17:16 | 17:43 | 18:13 | 18:42 | 19:10 | 19:45 | 20:11 | 20:45 | 21:18 | 21:46 | 22:16 | 22:46 | 23:16 | 23:46 | 00:16 | 00:46 | 01:16 | 01:46 | 02:46 |
Each column is one journey, headed by the time it sets off. Times are shown at the route's main timing stops — buses serve all stops in between. Switch a table to All stops for every stop it calls at, or open a stop's own page for live departures there.
Fares on the A4
Adult single £2.50 to £3.00 · Child single £1.30 to £1.50
Adult single fare table, stage to stage
| £2.50 | Colnbrook, Lakeside Rd | |||||
|---|---|---|---|---|---|---|
| £2.50 | £2.50 | Upton Court Rd Junct | ||||
| £3.00 | £2.50 | £2.50 | Wellington Street | |||
| £3.00 | £3.00 | £2.50 | £2.50 | Salt Hill Three Tuns | ||
| £3.00 | £3.00 | £3.00 | £3.00 | £2.50 | Bath Rd, Dover Road | |
| £3.00 | £3.00 | £3.00 | £3.00 | £3.00 | £3.00 | Moreton Way |
Read along the row of the stage you travel to, to the column below the stage you board at; the first stage is Heathrow Central Stn.
First Bus's published fares on the Bus Open Data Service, in force from 23 August 2026. A fare stage is a group of neighbouring stops that are priced the same. Fares change — check with First Berkshire & The Thames Valley before you travel.
Tickets on the A4
First Berkshire & The Thames Valley publishes singles and returns on this route for adults and children.
Adult Return · Adult Single · Child Return · Child Single
Ticket types come from First Berkshire & The Thames Valley's own fares data on the Bus Open Data Service, last updated 4 September 2026. Prices for singles and returns are under Fares above; for the others, check with First Berkshire & The Thames Valley.
Christmas & bank holidays
These dates are not the usual timetable for the day they fall on. They come from the operator’s published data, which for Christmas and New Year is often late or incomplete, so check with First Berkshire & The Thames Valley before you travel. Everything above is an ordinary week.
Not published yet: Christmas Eve, Christmas Day, Boxing Day, 28 December, New Year's Eve and New Year's Day. Operators often publish festive timetables only a few weeks ahead, so check again nearer the date.
Route map
All stops on route A4
A4 towards Cippenham
All 34 stops
- Heathrow Central Bus Station (Stop 20) Heathrow Airport
- Newport Road (Stop BS) Sipson
- Bath Road / Newport Road (Stop BT) Sipson
- Compass Centre (Stop BW) Harmondsworth
- Pinglestone Close (Stop H) Harmondsworth
- Colnbrook By-Pass (Stop T) Longford
- Lakeside Road (opp) Colnbrook
- Sutton Lane (o/s) Brands Hill
- The Toby (opp) Langley
- Ditton Park Road (nr) Langley
- Cedar Way (adj) Langley
- Drake Avenue (westbound) Langley
- Upton Court Road Junction (W-bound) Langley
- Kaywood Close (westbound) Langley
- St Bernards Convent (NW-bound) Langley
- Slough Grammar School (o/s) Langley
- Uxbridge Road Sainsbury's (opp) Langley
- Sorting Office (Stop K) Slough Town Centre
- Wellington Street Stop H Slough Town Centre
- Wellington Street (Stop D) Slough Town Centre
- Wellington Street stop E Slough Town Centre
- Salt Hill Care Centre (o/s) Elliman
- Salt Hill Park (opp) Chalvey
- Slough Ice Arena (opp) Baylis
- Salt Hill Three Tuns (W-bound) Slough Trading Estate
- Twinches Lane North (nr) Slough Trading Estate
- Leigh Road (opp) Slough Trading Estate
- Westgate Retail Park (adj) Slough Trading Estate
- Dover Road Stop B (W-bound) Slough Trading Estate
- Burnham Lane (opp) Cippenham
- Everitts Corner (W-bound) Cippenham
- St Andrews Way (o/s 7) Cippenham
- Dennis Way (o/s 73) Cippenham
- Moreton Way (S-bound) Cippenham
A4 towards Heathrow Airport
All 32 stops
- Moreton Way (N-bound) Cippenham
- Harrison Way (adj) Cippenham
- Dennis Way (o/s 56) Cippenham
- St Andrews Way (opp) Cippenham
- Everitts Corner (E-bound) Cippenham
- Burnham Lane (nr) Cippenham
- Dover Road Stop A (E-bound) Slough Trading Estate
- Westgate Retail Park (opp) Slough Trading Estate
- Leigh Road (nr) Slough Trading Estate
- Twinches Lane North (opp) Slough Trading Estate
- Salt Hill Three Tuns (E-bound) Slough Trading Estate
- Slough Ice Arena (adj) Baylis
- Salt Hill Park (adj) Chalvey
- Wellington Street stop W Slough Town Centre
- Wellington Street Stop B Slough Town Centre
- Sorting Office (Stop J) Slough Town Centre
- Uxbridge Road Sainsbury's (adj) Langley
- St Bernards Convent (SE-bound) Langley
- Kaywood Close (eastbound) Langley
- Upton Court Road Junction (E-bound) Langley
- Drake Avenue (E-bound) Langley
- Cedar Way (opp) Langley
- Ditton Park Road (opp) Langley
- The Toby (o/s) Langley
- Sutton Lane (nr) Brands Hill
- Lakeside Road (nr) Colnbrook
- Duke's Bridge (Stop S) Longford
- Pinglestone Close (Stop G) Harmondsworth
- Compass Centre (Stop BA) Harmondsworth
- Newport Road (Stop BB) Sipson
- Nene Road Roundabout (Stop BN) Sipson
- Heathrow Central Bus Station (Stop 20) Heathrow Airport
Towns & areas on this route
Frequently asked questions
What time is the first A4 bus?
The A4 runs 24 hours a day, so there is no first or last A4 bus — the night timetable is below.
What time is the last A4 bus?
There is no last A4 bus: the A4 runs through the night, every night it runs.
How much does the A4 bus cost?
First Berkshire & The Thames Valley's published fares on the A4: adult single £2.50 to £3.00, child single £1.30 to £1.50. Most single fares in England are capped at £3 until 31 December 2026 (then £2 from 1 January 2027). First Berkshire & The Thames Valley day and weekly tickets can work out cheaper if you travel more than twice a day.
Who runs the A4 bus?
The A4 is operated by First Berkshire & The Thames Valley.
Timetable data from First Berkshire & The Thames Valley via the DfT Bus Open Data Service (South East England feed). Check before you travel — services can change at short notice.